Abstract: A method and device are provided for determining an input voltage of a transformer of a local network station. The method includes measuring an input current of the transformer, an output current of the transformer, an output voltage of the transformer, and a phase angle between the output current and output voltage. The method also includes determining a translation ratio and an admittance of a cross-member of a p-equivalent circuit diagram of the transformer of the local network station using the measured input current, the measured output current, the measured output voltage and the phase angle between the output current and the output voltage. The method also includes determining the input voltage of the transformer of the local network station based on the determined translation ratio and the determined admittance of the cross-member of the p-equivalent circuit diagram.

Abstract: A resolver signal converter and a resolver signal conversion method amplify and perform analogue-digital conversion on a sine wave output from a resolver; thereafter, among frequency components of the sine wave output, pass and thereby extract a predetermined bandwidth of which the center frequency is the frequency of an excitation signal, by means of a band-pass filter; sample the sine wave output while synchronizing the sine wave output with a reference signal which is based on the excitation signal; and generate a detection angle signal sine value from the sampled signal. Similarly, a detection angle signal cosine value is generated from a cosine wave output from the resolver. A detection angle is calculated based on the detection angle signal sine value and the detection angle signal cosine value.

Abstract: A simple, inexpensive, and fast method of establishing if a defect does or does not exist within a thick-walled solid geometry, which is especially useful to detect if such a defect, a crack, exists within a gun barrel. With further analysis, the method allows not only the identification of the defect's presence; but, a means of establishing the size thereof—which, for example, is critical to understanding if a gun tube has a defect that would warrant its being taken out of service for the safety of its crew or removed from manufacturing. The method involves creating an acoustic vibration in the particular thick-walled, solid geometry, esp. a gun barrel, and observing the vibration pattern which results.

Abstract: A measurement instrument receives an analog input signal from a measurement target, converts the input signal into a digital signal, scans the digital signal and comparing the scanned digital signal with a pattern signature using a flexible matching procedure implemented by hardware, and triggers the measurement instrument according to a result of the flexible matching procedure.

Abstract: Provided are a method and an apparatus for encoding and decoding an audio signal. A method for encoding an audio signal includes receiving a transformed audio signal, dividing the transformed audio signal into a plurality of subbands, performing a first sinusoidal pulse coding operation on the subbands, determining a performance region of a second sinusoidal pulse coding operation among the subbands on the basis of coding information of the first sinusoidal pulse coding operation, and performing the second sinusoidal pulse coding operation on the determined performance region, wherein the first sinusoidal pulse coding operation is performed variably according to the coding information. Accordingly, it is possible to further improve the quality of a synthesized signal by considering the sinusoidal pulse coding of a lower layer when encoding or decoding an audio signal in an upper layer by a layered sinusoidal pulse coding scheme.

Abstract: For multi-dimensional temporal-spatial data, EEMD is applied to time series of each spatial location to obtain IMF-like components of different time scales. All the ith IMF-like components of all the time series of all spatial locations are arranged to obtain ith temporal-spatial multi-dimensional IMF-like component. For two-dimensional spatial data or images, the two-dimensional spatial data or images are consider as a collection of one-dimensional series in first direction along locations in second direction. The same approach to the one used in temporal-spatial data decomposition is used to obtain the resulting two-dimensional IMF-like components. Each of the resulted IMF-like components are taken as the new two-dimensional data for further decomposition, but the data is considered as a collection of one-dimensional series in second-direction along locations in first-direction.

Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system having an input amplifier with feedback loop circuitry and a compensation digital filter providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.

Abstract: A signal processing system implemented on a Field Programmable Gate Array (FPGA) operates according to a low frequency K-Clock to sample Optical Coherence Topography (OCT) signals, as opposed to relying on a high frequency K-Clock to obtain the same information. A resampler is used to resample the OCT signal uniformly in the optical frequency domain. The resampling may be performed by extracting instantaneous phase information from a low-frequency digitized K-Clock signal, unwrapping the extracted phase information, multiplying the unwrapped extracted phase information with an interpolation factor to obtain recalculated phase information, determining one or more integer crossing points corresponding to the recalculated phase information, and interpolating one or more values of the OCT signal based on the one or more integer crossing points. The integer crossing points may represent points in phase divisible by 360 degrees, within the range of points in phase defined by the recalculated phase information.

Abstract: Meter electronics (20) for processing sensor signals for a multi-phase flow material in a flowmeter (5) is provided according to an embodiment of the invention. The meter electronics (20) includes an interface (201) for receiving first and second sensor signals (210 and 211) for the multi-phase flow material and a processing system (203).

Abstract: In environments (such as acoustic and bioelectrical environments) characterized by multiple simultaneous sources, effective blind source separation from sensor response mixtures becomes difficult as the number of sources increases—especially when the true number of sources is both unknown and changing over time. However, in some environments, non-sensor information can provide useful hypotheses for some sources. Embodiments of the present invention provide an adaptive filtering architecture for validating such source hypotheses, extracting an estimated representation of source signals corresponding to valid hypotheses, and improving the separation of the remaining “hidden” source signals from the sensor response mixtures.

Abstract: The invention concerns a sensor arrangement having at least one condition parameter sensor, one sensor connection structure for the connection of the at least one condition parameter sensor to a structural construction element as well as with one of the signal processing devices which are coupled to the at least one condition parameter sensor, which includes a frequency elimination filter for an averaging of the signal of the at least one condition parameter sensor over the cycle duration of the first natural frequency of the sensor arrangement. This creates the possibility of creating a notch filter with a notch frequency, which corresponds to the first natural frequency of the acceleration sensor arrangement and exhibits a high filter quality. The notch frequency and the whole number multiples are thereby fully eliminated and disturbances due to the natural frequencies of the sensor arrangement are avoided.

Abstract: A method is described for extracting aperiodic components from a time-series wave data set for diagnosis purposes. The method may include collecting time-series wave data within a controlled environment were a plurality of contrasting conditions can be used in collecting the time-series wave data set. Aperiodic components can be extracted from the time-series wave data set and the aperiodic components can then be fitted to the plurality of contrasting conditions of the controlled environment to product regressed aperiodic components from which diagnostic determination can be made.

Abstract: A technique includes processing first data indicative of a first image of a subsurface region of interest on a machine to generate second data indicative of a second image. The first image is derived from measurements of seismic waves, which propagate in a plurality of directions, and the second image is generated by partitioning the first image based on the directions. The technique includes processing the second data to determine a dip decomposition for each of the directions; and based on the dip decompositions and the directions, generating an angle domain common image gather.

Abstract: Probe configuration is achieved in a measurement system in which probes are given possible configuration data depending upon conditions in an area relevant to the area of the probe. The possible probe configurations include global boundaries, such as time, and each probe then, based upon the possible configurations, selects a configuration. In one embodiment, the probe may interact with a central processor to further define the probe configuration. In one embodiment, probes may communicate with other probes, both to help define their operating environment and to optionally provide configuration data to another probe.

Abstract: The present specification describes techniques and apparatus for reducing eye monitor data samplers in a receiver. A single eye monitor data sampler is used for multiple normal data samplers in a receiver.

Abstract: Motor control circuits and associated methods to control an electric motor provide a plurality of drive signal channels at the same phase, resulting in reduced jitter in the rotational speed of the electric motor.

Abstract: A frame averaging circuit adapted for a color blood flow frame in a medical ultrasound imaging system. The frame averaging circuit comprises two sections, i.e., a recursive calculation section and a non-recursive section. The recursive calculation section employs an IIR filter in combination with a look-up table, and is adapted for dealing with the cases where no change occurs to the blood flow velocity direction. The non-recursive section compares the blood flow velocity, the energy and the energy prior to wall filtering of the color blood flow echo signal to various threshold values. Different from the recursive calculation section, the non-recursive section is employed when a change occurs to the blood flow velocity direction.

Abstract: A signal acquisition system has a signal acquisition probe having probe tip circuitry coupled to a resistive center conductor signal cable. The resistive center conductor signal cable of the signal acquisition probe is coupled to a compensation system in a signal processing instrument via an input node and input circuitry in the signal processing instrument. The signal acquisition probe and the signal processing instrument have mismatched time constants at the input node with the compensation system providing pole-zero pairs for maintaining flatness over the signal acquisition system frequency bandwidth.

Abstract: An apparatus and method for performing periodic noise (Pnoise) simulation with full spectrum accuracy is disclosed herein. Noise contributions of a circuit under consideration are identified and separated for different computation treatment. The different computation treatment results in computational efficiency without sacrificing accuracy of simulation results.

Abstract: The present subject matter relates to in vivo volumetric bidirectional blood flow imaging using single-pass flow imaging spectral domain optical coherence tomography. This technique uses a modified Hilbert transform algorithm to separate moving and non-moving scatterers within a depth. The resulting reconstructed image maps the components of moving scatterers flowing into and out of the imaging axis onto opposite image halfplanes, enabling volumetric bidirectional flow mapping without manual segmentation.

Abstract: A system and method for filtering an input signal with at least a first and a second octave portions is presented. A proportional bandwidth filter system includes a bandwidth reducing filter, a down-sampler, and first and second octave filters. The bandwidth reducing filter reduces the bandwidth of the input signal and the down-sampler rolls the second octave portion represented in the reduced bandwidth signal to a top octave portion of a down-sampled signal. The first and second octave filters are comprised of a plurality of proportional bandwidth filters. The first octave filter partitions and converts the first octave portion of the input signal into output signals representing the frequency spectra of the first octave of the input signal. Similarly, the second octave filter generates outputs representing the spectra of the second octave portion of the input signal represented as the top octave portion of a down-sampled signal.

Abstract: A method is provided for performing real-time spectral analysis of a non-stationary signal. The method includes sampling the non-stationary signal, using an observation window having a length short enough to approximate a stationary signal, to provide an initial set of sampled data, buffering the initial set of sampled data to obtain multiple buffered sets of sampled data, filtering the initial set of sampled data and the buffered sets of sampled data, using corresponding filter responses, to obtain multiple filtered sets of sampled data, and performing a chirp-z-transform (CZT) of the filtered sets of sampled data to provide a set of discrete Fourier transforms (DFT) coefficients. A total signal spectrum of the non-stationary signal is reconstructed using the set of DFT coefficients.

Abstract: Some embodiments can concern an apparatus configured to detect an electrical state of one or more electrical devices. The one or more electrical devices are coupled to an electrical power infrastructure and generate one or more high-frequency electrical signals on the electrical power infrastructure. The apparatus can include: (a) a processing module configured to run on a processor of a computational unit; and (b) a sensing device configured to be coupled to an electrical outlet. The sensing device can have: (a) a data acquisition receiver configured to receive the one or more high-frequency electrical signals via the electrical outlet and convert the one or more high-frequency electrical signals into one or more first data signals when the sensing device is coupled to the electrical outlet. The electrical outlet can be electrically coupled to the electrical power infrastructure. The sensing device is in communication with the computational unit.

Abstract: Systems and methods are described herein for defining and parameterizing signals or system responses with finite rate of innovation (FRI) signal processing. A delta-sigma modulator is used at a low sampling rate to digitize an analog signal for FRI processing. This allows for reduced or eliminated analog pre-filtering while still utilizing low sample rates for an overall reduction in circuit size and power dissipation over conventional FRI signal acquisition techniques.

Abstract: A closed-loop system having a controllable variable is monitored to detect the off-nominal behavior and raise an alert when fault is detected. The faults show up in such a way that the tracking error signal is impacted and this impact manifests itself as a change in the frequency components. A filter isolates a band of frequency components of the tracking error signal that are more impacted than others by deviation caused by a fault to be detected. The filter can effectively amplify the section of the error tracking signal that contains the frequency components having impact. In addition, the filter will also have the characteristics to attenuate the impact of other frequency components. An accumulated error signal is generated from the filtered tracking error signal, compared with a predetermined fault threshold characteristic, and a fault alert is provided if a predetermined threshold is satisfied.

Abstract: Embodiments of the invention include methods and instruments for generating covariance and correlation values of two or more signals. The covariance or correlation values are used to compare intervals of interest of the two signals and to produce trigger events based on similarities between the two signals. A reference signal is digitized and stored, and then used as a reference when comparing to a real-time input signal. Mean values of the input signal and the previously stored reference signal are generated so that suitable covariance and correlation values can be generated. Threshold detectors detect when the covariance value and/or the correlation value exceed certain thresholds, which can cause the test and measurement instrument to be triggered.

Abstract: A system includes a plurality of sensors measuring a physical parameter; a processing unit communicatively coupled to the plurality of sensors and configured to receive sensor data from each of the plurality of sensors; wherein the processing unit is further configured to compare rates of change between sensor data for each individual sensor of the plurality of sensors and each of the other individual sensors of the plurality of sensors; wherein the processing unit is further configured to perform a first action when the rate of change of each of the plurality of sensors is within a first threshold of all of the other plurality of sensors; and wherein the processing unit is further configured to perform a second action when the rate of change of at least one of the plurality of sensors is not within the first threshold of at least another of the plurality of sensors.

Abstract: A noise figure deriving device is provided to precisely obtain the noise figure (NF) of a receiver. The noise figure deriving device includes a first NF deriving unit that derives a first noise figure, which is a noise figure when a predetermined receiver-side pin pin1R is connected to a receiver, based on a ratio Y of one power to the other power of two types of reference noise. The noise figure deriving device also includes a second NF deriving unit that derives a second noise figure, which is a noise figure when receiver-side pins pin2R, pin3R, and pin4R are connected to the receiver, based on an inter-measurement-device-side-terminal difference and the first noise figure. The inter-measurement-device-side-terminal difference is a difference between the first noise figure and the second noise figure.

Abstract: Embodiments of adaptively performing clutter filtering are disclosed. In one embodiment, by way of non-limiting example, an ultrasound system comprises: an ultrasound data acquisition unit configured to transmit and receive ultrasound signals to and from a target object to output a plurality of ultrasound data corresponding to each pixel of a color Doppler mode image; and a processing unit in communication with the ultrasound data acquisition unit and being configured to calculate a power difference value corresponding to each of the pixels based on the plurality of ultrasound data, determine whether the power difference value is equal to or larger than a first threshold value, and if the power difference value is equal to or larger than the first threshold value, then perform first clutter filtering upon the plurality of ultrasound data, or if the power difference value is less than the first threshold value, then perform second clutter filtering upon the plurality of ultrasound data.

Abstract: Mechanical oscillators employ the use of resonance parameters, frequency and the quality factor Q, for the measurement of corrosion or deposition. The ability of a mechanical oscillator to measure small amounts of metal loss or deposition is not only dependent upon the mechanical design but is limited by the precision in determining the resonance frequency and Q. Methods for measuring these resonance parameters with a high precision in the presence of noise are provided. The increased degree of precision improves the utility of these devices as sensitive probes for corrosion and deposition (fouling) measurement. The increased degree of precision is enabled in part by employing curve fitting consistent with modeling the mechanical oscillator as a simple harmonic oscillator. This curve fitting procedure, combined with averaging and utilizing signal processing parameters to mitigate noise effects, adds precision in measuring resonance parameters.

Abstract: Apparatus for reducing an interference portion in a time-discrete signal further including a useful portion, including a first provider for providing the time-discrete signal including the interference portion and the useful portion; a second provider for providing a first time-discrete reference signal including a first interference portion, and a second time-discrete reference signal including a second interference portion, the second interference portion being shifted in phase relative to the first interference portion. The apparatus further includes a subtractor for generating a differential signal from the two reference signals, the differential signal including a frequency component caused by the first and second interference portions; and a manipulator for manipulating the time-discrete signal on the basis of the differential signal such that in a manipulated time-discrete signal the frequency component is reduced.

Abstract: An electroencephalogram signal processing method includes a recording step, a retrieving step, a removing step and a synthesizing step. The recording step retrieves EEG signal components of a testee via a plurality of electrodes, wherein the EEG signal components serve as an input signal. The retrieving step filters the input signal to obtain a predetermined frequency band signal, and subtracts the predetermined frequency band signal from the input signal to obtain a difference signal. The removing step performs an independent component analysis operation between the difference signal and a separating matrix to obtain an analysis signal, generates a separating pseudo inverse and an independent analysis signal, and performs a matrix operation between the separating pseudo inverse and the independent analysis signal to obtain a corrected signal. The synthesizing step adds the corrected signal and the predetermined frequency band signal together to obtain an output signal.

Abstract: One embodiment of the present invention relates to a magnetic sensor circuit having a magnetic field sensor device configured to generate a digital signal proportional to an applied magnetic field. An analog-to-digital converter converts the analog signal to a digital signal that is provided to a digital signal processing unit, which is configured to digitally track the analog output signal. The digital tracking unit comprises a delay removal circuitry configured to generate a plurality of digital signal component corresponding to a chopping phase. A non-delayed offset compensated digital output signal may be generated within the chopping phase by mathematically operating upon (e.g., adding or subtracting) the plurality of digital signal components, generated by the delay removal circuitry.

Abstract: A system and method for identifying an origin of suspected pestware activity on a computer is described. One embodiment includes establishing a time of interest relating to a suspicion of pestware on the computer; issuing a timestamp in response to the establishing the time of interest; identifying, in response to the issuing the timestamp, indicia of pestware; and accessing at least a portion of a recorded history of sources that the computer received files from so as to identify, based at least in part upon the identified indicia of pestware, a reference to an identity of a source that is suspected of originating pestware.

Abstract: A characteristic thumbprint is extracted from a data signal, the thumbprint based on statistics relating to the data signal. The data signal can be compared indirectly by matching this thumbprint against one or more reference thumbprints. The data signal may be any type of signal, including streaming digitized audio or obtained from static files. A database may contain a number of these characteristic thumbprints, and the database can be searched for a particular thumbprint.

Abstract: An adaptive distortion reduction system comprising: an input interface to receive a distorted signal comprising a distorted component and an undistorted component, the distorted component being at least in part attributed to an exogenous signal; and an adaptive distortion reduction module coupled to the input interface, to perform linearization based at least in part on the distorted signal and information associated with the exogenous signal, to obtain a corrected signal that is substantially similar to the undistorted component; wherein the adaptive self-linearization module includes: a first digital signal processor (DSP) that is adapted to obtain a filter transfer function that approximates a transfer function to be corrected; and a second DSP that is configured using configuration parameters of the first DSP.

Abstract: In the method of these teachings for detection of physical phenomena from or analysis of physical signals, an improved Empirical Mode Decomposition method decomposes physical signals representative of a physical phenomenon into components.

Abstract: Apparatus for capturing, aggregating, and transferring data to detect windshield wiper motion in a motor vehicle so as to alert the driver of the need to turn on headlights. The apparatus includes motion-sensing hardware having a microprocessor programmed to detect rhythmic movement of shadows at regular intervals or to receive digitized signals from inertial sensors and to sense rhythmic patterns of vibration or motion in the car and characterize and filter the patterns to accurately distinguish wiper motions from other motions. The software then instructs the microprocessor to output a perceivable alert to the driver indicating that vehicle lights must be turned on.

Abstract: A wheel monitoring system that includes a tracking filter apparatus for tracking a signal that has a varying main frequency. The tracking filter apparatus has an adjustable filter and a filter controller arranged to measure the amplitude of the filtered signal and to compare amplitude against a reference value. The filter controller adjusts the cut off frequency of the filter if the measured amplitude differs from the reference value by an amount that exceeds a threshold value. The filter controller adjusts the cut off frequency such that the main frequency lies within the roll off region of the filter's frequency response. The system may be used to track signals that are produced by shock sensors in a wheel mounted monitoring device.

Abstract: A computer-implemented method is provided for generating the estimation of current position, velocity and acceleration state vectors and associated uncertainty estimation (covariance) of a boosting ballistic missile. The method includes constructing a state tensor of the projectile from a plurality of sensor measurements in Earth-Centered, Earth-Fixed (ECEF) coordinates; translating the state tensor to Cartesian coordinates as a transform state; determining a covariance matrix from the transform state; updating the transformed state as an updated transform state; and updating the covariance matrix as an updated covariance. The process can further include adjusting the covariance matrix by an approximate transition matrix and a process noise matrix. The noise matrix can be translated from a local noise matrix based on a propagation time-step, a scaling parameter, and a bias process noise level. A time-of-flight in the state tensor can be updated by smoothing from a launch event.

Abstract: A microseismic monitoring system includes a seismic sensor positioned proximate to a wellbore traversing a formation; an orientation source producing an orientation shot; a hydraulic apparatus operationally connected with the formation to produce a fracture in the formation; a computer control system operationally connected with a database of known spectral attributes for event categories; and a computer readable medium that carries instructions executable by the computer control system that, when executed: receive data from the seismic sensor; select an event of interest from the data received; determine a spectral estimate of the selected event of interest; compare the determined spectral estimate of the selected event of interest to the known spectral estimates; and select from the data received by the seismic source the orientation shot for orientation of the seismic sensor.

Abstract: A characteristic thumbprint is extracted from a data signal, the thumbprint based on statistics relating to the data signal. The data signal can be compared indirectly by matching this thumbprint against one or more reference thumbprints. The data signal may be any type of signal, including streaming digitized audio or obtained from static files. A database may contain a number of these characteristic thumbprints, and the database can be searched for a particular thumbprint.

Abstract: A sensor system and method of using the system synergistically to improve the accuracy and usefulness of measured results is described. The system is comprised of electronically linked components that act as markers to trigger events, producers that gather data from sensors and aggregators that combine the data from a plurality of producers using triggers from marker devices to select the data of interest. The system is shown to be applicable to selection of data regions of interest and to analysis of the data to improve accuracy. The analysis of the data of any particular sensor within the system makes use of extrinsic data, being data generated by other sensors and intrinsic data, that is data or data limits that are known to be true from nature, laws of physics or just the particular information the user wants to acquire. The system is demonstrated on the analysis of Doppler radar measurements of a thrown object.

Abstract: A test and measurement instrument and method for generating IQ-based time domain waveform information and presenting the IQ-based time domain waveform information together with other time domain waveform on a common axis through a user interface. The test and measurement instrument can include, for example, one or more input terminals to receive an electrical signal under test, an analog-to-digital converter (ADC) to digitize the signal under test, a digital downconverter to produce I (in-phase) and Q (quadrature) baseband component information from the digitized signal, a memory configured to store the IQ baseband component information, a user interface, and a controller. The controller can be configured to generate an IQ-based time domain waveform using the IQ baseband component information, and present the IQ-based time domain waveform and a second time domain waveform on a common axis through the user interface.

Abstract: A method of isolating a frequency in a rotating machine having at least one sensor includes receiving, from the at least one sensor, a sensor signal that includes at least one frequency, converting the sensor signal to a digital vibration signal, modifying the vibration signal to generate an envelope signal, synchronously oversampling the envelope signal to generate a synchronous envelope signal, and transforming the synchronous envelope signal into a frequency spectrum to isolate the frequency.

Abstract: In one implementation of the disclosed technique, a NOx sensor polynomial algorithm is used to discriminate between NOx and ammonia emission. The polynomial algorithm uses the SCR's time constant property to infer the “loading state” of the SCR and estimate both the NOx conversion and quantity of ammonia slip. The polynomial algorithm assesses this by differentially analyzing the upstream and downstream NOx sensor signals through a comparison of the polynomial coefficients.

Abstract: A system and method of identifying changes utilizing radio frequency polarization includes receiving a reflected and/or transmitted polarized radio frequency signal at a receiver, filtering, amplifying and conditioning the received signal, converting the received signal from an analog format to a digital format, processing the digital signal to elicit a polarization mode dispersion feature of the received signal, and comparing the polarization mode dispersion features to a known calibration to detect a change in a characteristic of the target object.

Abstract: A method for quantifying peaks in an analytical signal, peaks in the analytical signal being quantified by recording successive signal values and applying a peak analysis methodology to the recorded successive signal values within an interval to obtain a set of peak quantification results. Before the same peak analysis methodology is applied to the modified signal to quantify the peaks in the signal, random noise is added to the analytical signal and/or the signal is shifted within the interval to facilitate optimization of the parameters of the peak analysis methodology and to improve the robustness of the method in runtime applications. A subsequent statistical evaluation of the peak quantification results from the multiple repeated peak analyses of the original and modified signals is used to detect an occurrence of and to reduce the chance of a possible error in the peak quantification that needs to be alarmed or addressed.

Abstract: A method, system and apparatus for obtaining a parameter of interest from a plurality of sensors in a fiber optic cable deployed in a wellbore are disclosed. Light having variable frequency within a range of frequencies is propagated along the fiber optic cable. Signals are received that are responsive to interaction of the propagated light with the plurality of sensors. The received signals are filtered using a programmable filter. The parameter of interest is obtained from the filtered signals. In one aspect, the fiber optic cable is coupled to a member deployed in the wellbore and the parameter of interest is related to the member.

Abstract: A sensor network may be created by collecting information from a plurality of mobile devices, such as cellular telephones. The mobile devices use sensors, such as microphones, cameras, accelerometers, biometric readers, etc. to detect the sensory information. Sensory output related to detected sensory information may be transmitted from a mobile device to a receiver that receives the sensory outputs. The received sensory outputs from a plurality of mobile devices may be aggregated to generate aggregated data, which may be transmitted to one or more receivers that use the aggregated data to perform a function and/or present the aggregated data to a user. Additionally, the aggregated data may be reviewed by a reviewer component that can create (revised) detection instructions regarding how one or more mobile devices are to detect sensory information and/or what sensory information to detect (e.g., to make resulting aggregated data more relevant).